The Catalyst Cloud provides three regions in New Zealand. Regions are data
centres that are completely independent and isolated (each with their own
control plane), providing fault tolerance and geographic diversity.

The API request you use to authenticate with the Catalyst Cloud allows you to
scope a token on a given region. The token can then be used to interact with
the API endpoints of the other services hosted in the same region.

The connectivity between compute instances hosted on different regions takes
place over either our wide area network (WAN) or the Internet, when allowed by
your security groups and network configuration.

Contrary to data traffic within a given region, there are data transfer costs
applicable to data traffic between regions.

With the exception of multi-region object storage service, resources are not
replicated automatically across regions unless you do so. This provides users
the flexibility to introduce replication where required and to fail-over
resources independently when needed.